private static void Main(string[] args)
        {
            Task[] tasks=new Task[10];
            for (int i = 0; i < 10; i++)
            {
                int i1 = i;
                tasks[i1] = Task.Factory.StartNew(() => TaskWork(i1));
            }
            Console.ReadLine();
        }


        private static void TaskWork(int i)
        {
            Console.WriteLine("i=" + i);
            int length = i + 5;
            for (; i < length; i++)
            {
                Thread.Sleep(100000); // 测试代码
                Console.WriteLine(i);
            }
        }